Which line from The Riddle of the Rosetta Stone shows logical reasoning? Immediately Champollion thought of the one Greek leader whose name might be identified with this particular combination of letters.
Of the nine symbols, Champollion already knew numbers 1, 2, 4, 5, 7, and 8.
Now he had three more signs to add to his list, those that stood for "K," "N," and "S."
He had deciphered many cartouches from the period when Greek pharaohs ruled Egypt.